30939095831 has 24 divisors (see below), whose sum is σ = 36187400304. Its totient is φ = 26374360320.

The previous prime is 30939095809. The next prime is 30939095843. The reversal of 30939095831 is 13859093903.

It is a de Polignac number, because none of the positive numbers 2^k-30939095831 is a prime.

It is a super-2 number, since 2×30939095831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30939095831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30939055831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13260341 + ... + 13262673.

It is an arithmetic number, because the mean of its divisors is an integer number (1507808346).

Almost surely, 2^30939095831 is an apocalyptic number.

30939095831 is a deficient number, since it is larger than the sum of its proper divisors (5248304473).

30939095831 is a wasteful number, since it uses less digits than its factorization.

30939095831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3711 (or 3704 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 50.

The spelling of 30939095831 in words is "thirty billion, nine hundred thirty-nine million, ninety-five thousand, eight hundred thirty-one".